Roger A. Grimes (CPA, CISSP, MCSE: Security, MVP, CEH, CHFI, TICSA) is a 20-year computer security consultant, writer, and teacher. He has written over a 150 national magazine articles on computer security, and this is his fifth book on Microsoft Windows security. He has consulted for many of the world’s best-known enterprises (including McAfee, Microsoft, Verisign, and IBM), multiple universities, cities and school systems, plus every branch of the U.S. armed forces. He is currently a highly rated instructor teaching Windows and Linux security in Foundstone’s Ultimate Hacking classes. He has presented at many of the industry’s largest conferences, including MCP TechMentor, Windows Connections, and SANS. He was a contributing editor for Windows IT Pro magazine, and is the security columnist for InfoWorld magazine. He has written several advanced security courses, including for Microsoft. He is a three-year recipient of Microsoft’s Most Valuable Professional (MVP) award, and was the creator and team leader of the successful www.hackiis6.com contest.